anyone demonstrated centrifugal force with a bucket full of water swinging over their head yet?

No, but I've demonstrated Newton's First Law of Motion and centripetal force with a bucket full of water swining over my head. ;-)

This sounds like a really good way to get the kids from class engaged and give the subject a better profile/rep in school.

I love to advertise physics. Most kids take physics because everyone has to have 3 credits of science and chemistry is the logical choice. (They've already had introductory physical science and biology as required classes.) So physics is basically an elective. So it doesn't matter where I teach, I get the kids out there and visible - we do a number of experiments in the hallway, not simply because there's more room, but also so the little kids (this is K-12 all in one building) see big kids having fun with science. I want those little kids to grow up thinking "and I'll get to take Physics when I'm a senior!" (The band directors at Newton take a similar approach - when they visit the 5th graders, it's not "do you want to be in band?" but "which instrument are *you* going to play when you're in band?" :-) We teachers of electives must get the word out!)

And I should probably advertise your new syndicated account, moosifer_jones! :-)